Fig. 2

A Abdominal enhanced CT showed a little exudation in the fatty space around the anastomosis and multiple lymph nodes, uneven thickening and edema of the gastric wall in the gastric pylorus; B colonoscopy showed that the anastomosis was obviously narrow with huge ulcers, which could not be passed by the endoscope; C, D gastroscopy showed that a 3.0 cm*4.0 cm giant ulcer was observed at the junction of descending bulb and the sinus tract was formed; E a total gastrointestinal CT angiography showed that significant thickening of the intestinal wall near the transverse colon, forming a sinus tract at the junction of the sinus-duodenum with a length of about 1.3 cm and a width of about 0.2 cm; F pathology showed that vasculitis could be seen in the submucosa and subserosa, and the patient was diagnosed as BD; G, H repeat gastroenteroscopy revealed that the intestinal ulcer was significantly improved